 The Topčiderska reka originates in the Lipovica (Lipovica Forest) area, on the northern slopes of the "Parcanski vis", the northern section of the Kosmaj mountain, at an altitude of 192 meters.Originally, it flows to the north-east, until it reaches the Belgrade's suburb of Ripanj, in the municipality of Voždovac.From there, the river flows generally into the north-west direction, along the Šumadija's geological bar into which the river carved its epigenetic valley and formed a watershed.